If you haven't updated your IP to Country database in a while I highly recommend you do so soon. Over the past 3 or 4 weeks roughly a dozen IAANA reserved ranges have been released and are starting to be assigned. I would also recommend you check here on Sundays or Mondays for the weekly updates (posted on Fridays or Saturdays).

The two main reasons for you to update regularly is less unknowns in your tracked ip's and NOT blocking newly assigned ranges. I work hard making the updates for you to be able to get the most out of NukeSentinel(tm) and your site, PLEASE take full advantage of this work.